أسئلة ضع دائرة على السكري Flashcards
Which hormone is produced by β cells in the pancreas?
a. Glucagon
b. Somatostatin
c. Insulin
d. Amylin
c. Insulin
Which cells in the pancreas are responsible for producing glucagon?
a. β cells
b. α cells
c. δ cells
d. PP cells
b. α cells
Somatostatin is produced by which type of cells in the pancreas?
a. β cells
b. α cells
c. δ cells
d. PP cells
c. δ cells
What condition is caused by a lack of insulin?
a. Hypoglycemia
b. Severe hyperglycemia
c. Hyperthyroidism
d. Hypothyroidism
b. Severe hyperglycemia
Untreated severe hyperglycemia can lead to which of the following complications?
a. Retinopathy
b. Nephropathy
c. Neuropathy
d. All of the above
d. All of the above
How many people worldwide are affected by diabetes?
a. 100 million
b. 150 million
c. 180 million
d. 200 million
c. 180 million
Diabetes is best described as:
a. A single disease
b. A group of heterogeneous syndromes
c. A viral infection
d. A bacterial infection
b. A group of heterogeneous syndromes
Which of the following is NOT a clinical classification of diabetes?
a. Type 3: insulin-resistant
b. Type 1: insulin-dependent
c. Type 2: non-insulin-dependent
d. Gestational diabetes
a. Type 3: insulin-resistant
Gestational diabetes affects which group of people?
a. Elderly
b. Teenagers
c. Pregnant women
d. Infants
c. Pregnant women
Diabetes due to other factors can be caused by:
a. Viral infections
b. Genetics or medication
c. Poor diet
d. Lack of exercise
b. Genetics or medication
Type 1 diabetes most commonly affects individuals in:
a. Infancy
b. Puberty or early adulthood
c. Middle age
d. Old age
b. Puberty or early adulthood
What is the cause of absolute insulin deficiency in type 1 diabetes?
a. Insulin resistance
b. Massive β-cell necrosis
c. Decreased insulin production
d. Increased glucagon production
b. Massive β-cell necrosis
The autoimmune process in type 1 diabetes is directed against which cells?
a. α cells
b. δ cells
c. β cells
d. PP cells
c. β cells
Which of the following are symptoms of type 1 diabetes?
a. Polydipsia, polyuria, and weight loss
b. Hyperactivity, weight gain, and hypertension
c. Hypoglycemia, fatigue, and muscle cramps
d. Fever, chills, and headaches
a. Polydipsia, polyuria, and weight loss
What life-threatening condition is associated with type 1 diabetes?
a. Hyperglycemic hyperosmolar syndrome
b. Ketoacidosis
c. Hypoglycemia
d. Diabetic foot
b. Ketoacidosis
To control hyperglycemia and ketoacidosis in type 1 diabetes, what is required?
a. Oral hypoglycemic agents
b. Exogenous insulin
c. Dietary modifications only
d. Exercise only
b. Exogenous insulin
Maintaining the accepted level of glycosylated hemoglobin (HbA1c) helps to avoid:
a. Hypoglycemia
b. Hyperthyroidism
c. Long term complications
d. Hypertension
c. Long term complications
Individuals with type 1 diabetes cannot maintain normal levels of which hormone?
a. Glucagon
b. Somatostatin
c. Insulin
d. Cortisol
c. Insulin
What type of diabetes is most common?
a. Type 2
b. Type 1
c. Gestational diabetes
d. MODY (Maturity Onset Diabetes of the Young)
a. Type 2
Which factors influence the development of type 2 diabetes?
a. Viral infections
b. Genetic factors, aging, obesity, and peripheral insulin resistance
c. Lack of physical activity
d. Excessive sugar intake
b. Genetic factors, aging, obesity, and peripheral insulin resistance
Type 2 diabetes is characterized by:
a. Severe metabolic alterations
b. Milder metabolic alterations than type 1
c. Ketoacidosis
d. Complete loss of β-cell function
b. Milder metabolic alterations than type 1
In type 2 diabetes, what happens to β-cell function over time?
a. It remains constant
b. It improves
c. It declines
d. It completely stops
c. It declines
What is the major cause of type 2 diabetes?
a. Excessive insulin production
b. Lack of sensitivity of target organs to insulin
c. Autoimmune destruction of β-cells
d. Increased glucagon production
b. Lack of sensitivity of target organs to insulin
Which of the following is NOT a characteristic of type 2 diabetes?
a. Ketoacidosis
b. Retention of some β-cell function
c. Variable insulin secretion
d. Gradual reduction in β-cell mass
a. Ketoacidosis
The treatment for type 2 diabetes primarily aims to:
a. Increase insulin production
b. Induce weight loss
c. Prevent long-term complications
d. Enhance glucose absorption
c. Prevent long-term complications
As type 2 diabetes progresses, what is often required to maintain satisfactory serum glucose levels?
a. Increased physical activity
b. Insulin therapy
c. Reduced carbohydrate intake
d. Increased protein intake
b. Insulin therapy
Why is insulin administered by subcutaneous injection?
a. It is degraded in the GIT if taken orally
b. It is more effective when injected
c. It causes less pain
d. It has a longer duration of action
a. It is degraded in the GIT if taken orally
Insulin is synthesized as which precursor?
a. Pre-insulin
b. Pro-insulin
c. Pre-pro-insulin
d. Insulinogen
b. Pro-insulin
The process that converts pro-insulin to insulin involves:
a. Proteolytic cleavage
b. Hydrolysis
c. Oxidation
d. Phosphorylation
a. Proteolytic cleavage
Which cells secrete insulin and C peptide?
a. α cells
b. δ cells
c. β cells
d. PP cells
c. β cells
Measurement of which peptide provides a better index of insulin levels?
a. Insulin
b. C peptide
c. Glucagon
d. Amylin
b. C peptide
What is the most important regulator of insulin secretion?
a. Blood glucose
b. Certain amino acids
c. Gastrointestinal hormones
d. Autonomic mediators
a. Blood glucose
Which of the following also regulates insulin secretion?
a. Blood pressure
b. Blood pH
c. Certain amino acids
d. Blood oxygen levels
c. Certain amino acids
Insulin secretion is influenced by gastrointestinal hormones and:
a. Blood cholesterol
b. Autonomic mediators
c. Plasma proteins
d. Blood calcium levels
b. Autonomic mediators
What enzyme phosphorylates glucose in the pancreas?
a. Hexokinase
b. Glucokinase
c. Phosphofructokinase
d. Glucose-6-phosphatase
b. Glucokinase
The phosphorylation of glucose in the pancreas leads to the production of:
a. ADP
b. AMP
c. ATP
d. GTP
c. ATP
ATP production in the pancreas inhibits the efflux of which ion?
a. Sodium (Na+)
b. Potassium (K+)
c. Calcium (Ca++)
d. Chloride (Cl-)
b. Potassium (K+)
The inhibition of K+ efflux causes what cellular event?
a. Hyperpolarization
b. Depolarization
c. Repolarization
d. Hypopolarization
b. Depolarization
The increased intracellular concentration of which ion stimulates insulin secretion?
a. Sodium (Na+)
b. Calcium (Ca++)
c. Potassium (K+)
d. Chloride (Cl-)
b. Calcium (Ca++)
Which process results in the direct secretion of insulin?
a. Inhibition of ATP production
b. Hyperpolarization of pancreatic cells
c. Decreased intracellular calcium levels
d. Depolarization of pancreatic cells leading to increased intracellular calcium levels
d. Depolarization of pancreatic cells leading to increased intracellular calcium levels
The variation in the times of onset and durations of activity of insulin preparations is primarily due to:
a. Differences in the amino acid sequences of the polypeptides and the type of formulation
b. The source of insulin
c. The dosage of insulin
d. The route of administration
a. Differences in the amino acid sequences of the polypeptides and the type of formulation
Which of the following insulins have a faster onset and shorter duration of action than regular insulin?
a. Glargine and detemir
b. Lispro, aspart, and glulisine
c. NPH and regular insulin
d. Lente and ultralente
b. Lispro, aspart, and glulisine
Why do insulins like lispro, aspart, and glulisine have a faster onset of action?
a. They are administered orally
b. They are more potent
c. They do not aggregate or form complexes
d. They have a higher concentration
c. They do not aggregate or form complexes
Which insulins are classified as long-acting and show prolonged, flat levels of the hormone following injection?
a. Glargine and detemir
b. Lispro and aspart
c. Regular and NPH
d. Lente and ultralente
a. Glargine and detemir
What characteristic of glargine and detemir makes them suitable as long-acting insulins?
a. They are rapidly absorbed
b. They have prolonged, flat levels of the hormone
c. They are taken orally
d. They are mixed with other insulins
b. They have prolonged, flat levels of the hormone
What is the most serious and common adverse reaction to an overdose of insulin?
a. Weight gain
b. Lipodystrophy
c. Hypoglycemia
d. Allergic reactions
c. Hypoglycemia
Which of the following is a possible adverse reaction to insulin?
a. Hair loss
b. Muscle cramps
c. Weight gain
d. Hyperglycemia
c. Weight gain
Which adverse reaction to insulin is less common with human insulin?
a. Hypoglycemia
b. Lipodystrophy
c. Weight gain
d. Allergic reactions
b. Lipodystrophy
Adverse reactions to insulin can include:
a. Allergic reactions and local injection site reactions
b. Increased appetite and sweating
c. Dehydration and dry skin
d. Fever and chills
a. Allergic reactions and local injection site reactions
Hypoglycemia caused by an insulin overdose is considered:
a. Mild and rare
b. The most serious and common adverse reaction
c. Temporary and harmless
d. Unrelated to insulin dosage
b. The most serious and common adverse reaction
Which of the following is a type of rapid-acting insulin preparation?
a. Insulin glargine
b. Insulin lispro
c. NPH insulin
d. Insulin detemir
b. Insulin lispro
Which insulin can be given intravenously in emergencies?
a. Regular insulin
b. Insulin aspart
c. Insulin glulisine
d. Insulin lispro
a. Regular insulin
What is the pregnancy category for rapid-acting and short-acting insulin preparations?
a. Category B
b. Category A
c. Category C
d. Category D
a. Category B
Rapid-acting insulin preparations are usually administered:
a. Once a day in the morning
b. At bedtime
c. Immediately before or following a meal
d. Once a week
c. Immediately before or following a meal
Why are rapid-acting insulins like lispro, aspart, and glulisine used?
a. To replace basal insulin
b. To mimic the prandial (mealtime) release of insulin
c. To treat diabetic ketoacidosis
d. To manage long-term glucose control
b. To mimic the prandial (mealtime) release of insulin
What is the primary action of rapid-acting insulin preparations?
a. Rapidly lowers blood glucose
b. Slowly decreases blood glucose
c. Increases blood glucose
d. Stabilizes blood glucose levels
a. Rapidly lowers blood glucose
Rapid-acting insulin preparations are often used in combination with:
a. Oral hypoglycemic agents
b. Longer-acting insulins
c. Dietary supplements
d. Exercise regimens
b. Longer-acting insulins
What characteristic allows insulin lispro to act more rapidly after subcutaneous injection compared to regular insulin?
a. Higher potency
b. More rapid absorption
c. Longer duration of action
d. Delayed onset of action
b. More rapid absorption
What is another name for Neutral Protamine Hagedorn (NPH) insulin?
a. Insulin lispro
b. Insulin glulisine
c. Insulin glargine
d. Insulin isophane
d. Insulin isophane
NPH insulin should only be given:
a. Intravenously
b. Subcutaneously
c. Orally
d. Intramuscularly
b. Subcutaneously
NPH insulin is classified as:
a. Rapid-acting insulin
b. Short-acting insulin
c. Intermediate-acting insulin
d. Long-acting insulin
c. Intermediate-acting insulin
NPH insulin forms a less-soluble complex due to the presence of:
a. Zinc
b. Protamine
c. Albumin
d. Phosphate
b. Protamine
The delayed absorption of NPH insulin is caused by:
a. Increased solubility
b. Rapid metabolism
c. Formation of a less-soluble complex
d. Higher concentration of insulin
c. Formation of a less-soluble complex
The duration of action of NPH insulin is considered:
a. Short
b. Intermediate
c. Long
d. Ultra-long
b. Intermediate
What pH level does NPH insulin have?
a. Acidic
b. Basic
c. Neutral
d. Alkaline
c. Neutral
Which of the following statements about NPH insulin is true?
a. It can be given intravenously in emergencies
b. It is rapidly absorbed
c. It should never be given intravenously
d. It is a long-acting insulin
c. It should never be given intravenously
Intermediate-acting insulin is useful in treating all forms of diabetes except:
a. Type 1 diabetes
b. Type 2 diabetes
c. Diabetic ketoacidosis or emergency hyperglycemia
d. Gestational diabetes
c. Diabetic ketoacidosis or emergency hyperglycemia
Intermediate-acting insulin is usually given along with:
a. Long-acting insulin
b. Oral hypoglycemic agents
c. Rapid- or short-acting insulin
d. Dietary supplements
c. Rapid- or short-acting insulin
What is the role of intermediate-acting insulin in diabetes management?
a. To treat hypoglycemia
b. To provide basal insulin coverage
c. To manage acute hyperglycemia
d. To replace rapid-acting insulin
b. To provide basal insulin coverage
Neutral protamine lispro (NPL) insulin is used only in combination with:
a. Insulin glargine
b. Insulin detemir
c. Insulin lispro
d. Regular insulin
c. Insulin lispro
Which of the following is a premixed combination of human insulins?
a. 100% NPH insulin
b. 70% NPH insulin plus 30% regular insulin
c. 50% NPH insulin plus 50% insulin glulisine
d. 75% insulin glargine plus 25% insulin lispro
b. 70% NPH insulin plus 30% regular insulin
What is the purpose of using premixed combinations of human insulins?
a. To treat diabetic ketoacidosis
b. To provide both basal and prandial insulin coverage
c. To manage insulin resistance
d. To reduce insulin dosage
b. To provide both basal and prandial insulin coverage
What is the isoelectric point of insulin glargine compared to human insulin?
a. Higher
b. Lower
c. The same
d. Variable
b. Lower
The lower isoelectric point of insulin glargine leads to what at the injection site?
a. Precipitation, thereby extending its action
b. Rapid absorption
c. Immediate release
d. Decreased efficacy
a. Precipitation, thereby extending its action
Compared to NPH insulin, insulin glargine has a:
a. Faster onset
b. Slower onset
c. Similar onset
d. Variable onset
b. Slower onset
Insulin glargine is characterized by:
a. A rapid peak
b. No peak (flat)
c. Multiple peaks
d. Irregular peaks
b. No peak (flat)
Insulin glargine must be administered:
a. Orally
b. Intravenously
c. Intramuscularly
d. Subcutaneously
d. Subcutaneously
What type of hypoglycemic effect is associated with insulin glargine?
a. Short-acting
b. Prolonged hypoglycemic
c. Immediate
d. Variable
b. Prolonged hypoglycemic
Insulin glargine’s action is extended due to:
a. Increased solubility
b. Precipitation at the injection site
c. Rapid metabolism
d. Increased dosage
b. Precipitation at the injection site
The administration route of insulin glargine is primarily:
a. Oral
b. Intravenous
c. Subcutaneous
d. Intramuscular
c. Subcutaneous
Insulin detemir has a fatty-acid side chain that enhances its association with which protein?
a. Hemoglobin
b. Myoglobin
c. Albumin
d. Fibrinogen
c. Albumin
The slow dissociation from albumin results in which property of insulin detemir?
a. Rapid-acting
b. Long-acting
c. Intermediate-acting
d. Short-acting
b. Long-acting
Which insulin has similar long-acting properties to insulin detemir due to its slow dissociation from albumin?
a. Insulin lispro
b. Insulin aspart
c. Insulin glulisine
d. Insulin glargine
d. Insulin glargine
The enhanced association of insulin detemir with albumin is due to:
a. Increased solubility
b. Higher concentration
c. Fatty-acid side chain
d. Protein binding
c. Fatty-acid side chain
Which characteristic of insulin detemir allows it to have prolonged effects similar to insulin glargine?
a. Rapid absorption
b. Immediate release
c. Slow dissociation from albumin
d. High potency
c. Slow dissociation from albumin
Insulin detemir is classified as which type of insulin preparation?
a. Rapid-acting
b. Short-acting
c. Long-acting
d. Intermediate-acting
c. Long-acting
The fatty-acid side chain in insulin detemir contributes to:
a. Faster onset of action
b. Reduced potency
c. Enhanced association with albumin
d. Increased degradation
c. Enhanced association with albumin
The prolonged action of insulin detemir is mainly due to:
a. Slow dissociation from albumin
b. Fast absorption
c. High dosage
d. Rapid metabolism
a. Slow dissociation from albumin
Pramlintide is a synthetic analog of:
a. Amylin
b. Insulin
c. Glucagon
d. Somatostatin
a. Amylin
Pramlintide is indicated as an adjunct to which type of insulin therapy?
a. Basal insulin therapy
b. Mealtime insulin therapy
c. Long-acting insulin therapy
d. Intermediate-acting insulin therapy
b. Mealtime insulin therapy
Which of the following is an effect of pramlintide?
a. Increases gastric emptying
b. Delays gastric emptying
c. Increases postprandial glucagon secretion
d. Decreases insulin sensitivity
b. Delays gastric emptying
Pramlintide helps to decrease which of the following?
a. Insulin production
b. Postprandial glucagon secretion
c. Blood pressure
d. Cholesterol levels
b. Postprandial glucagon secretion
How is pramlintide administered?
a. Orally
b. Intravenously
c. Intramuscularly
d. Subcutaneously
d. Subcutaneously